The Abakan (Russian: Абака́н; Khakas: Ағбан, Ağban), (from the Khakas word for "bear's blood") is a river in the Republic of Khakassia, Russia. It is a left tributary of the Yenisey. The river is used for log driving and irrigation. The city of Abakan is located at the confluence of the Abakan and the Yenisey.

It is formed by the confluence of the rivers Bolshoy Abakan and Maly Abakan. It rises in the western Sayan Mountains and flows northeast through the Minusinsk Depression to the Yenisey. It is about 514 kilometres (319 mi) long from the Bolshoy Abakan's source, and 327 kilometres (203 mi) for the Abakan proper. Its drainage basin covers 32,000 square kilometres (12,000 sq mi).

• List of rivers of Russia

• Dash, Mike (29 January 2013). "For 40 Years, This Russian Family Was Cut Off From All Human Contact, Unaware of World War II". Smithsonian Magazine. Retrieved 3 February 2013.